<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <link rel="stylesheet" type="text/css" href="css/test03.css">
    <title>Test03</title>
</head>
<body>
    <h1>文字替换</h1>
    <h2 id="h2">Heading 2<span></span></h2>
</body>
</html>